From d0420c83f39f79afb82010c2d2cafd150eef651b Mon Sep 17 00:00:00 2001 From: David Howells Date: Wed, 2 Sep 2009 09:14:16 +0100 Subject: KEYS: Extend TIF_NOTIFY_RESUME to (almost) all architectures [try #6] Implement TIF_NOTIFY_RESUME for most of those architectures in which isn't yet available, and, whilst we're at it, have it call the appropriate tracehook. After this patch, blackfin, m68k* and xtensa still lack support and need alteration of assembly code to make it work. Resume notification can then be used (by a later patch) to install a new session keyring on the parent of a process. Signed-off-by: David Howells Acked-by: Russell King cc: linux-arch@vger.kernel.org Signed-off-by: James Morris --- arch/parisc/kernel/entry.S | 2 +- arch/parisc/kernel/signal.c | 5 +++++ 2 files changed, 6 insertions(+), 1 deletion(-) (limited to 'arch/parisc/kernel') diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S index e552e547cb93..8c4712b74dc1 100644 --- a/arch/parisc/kernel/entry.S +++ b/arch/parisc/kernel/entry.S @@ -948,7 +948,7 @@ intr_check_sig: /* As above */ mfctl %cr30,%r1 LDREG TI_FLAGS(%r1),%r19 - ldi (_TIF_SIGPENDING|_TIF_RESTORE_SIGMASK), %r20 + ldi (_TIF_SIGPENDING|_TIF_RESTORE_SIGMASK|_TIF_NOTIFY_RESUME), %r20 and,COND(<>) %r19, %r20, %r0 b,n intr_restore /* skip past if we've nothing to do */ diff --git a/arch/parisc/kernel/signal.c b/arch/parisc/kernel/signal.c index f82544225e8e..b3bfc4326703 100644 --- a/arch/parisc/kernel/signal.c +++ b/arch/parisc/kernel/signal.c @@ -645,4 +645,9 @@ void do_notify_resume(struct pt_regs *regs, long in_syscall) if (test_thread_flag(TIF_SIGPENDING) || test_thread_flag(TIF_RESTORE_SIGMASK)) do_signal(regs, in_syscall); + + if (test_thread_flag(TIF_NOTIFY_RESUME)) { + clear_thread_flag(TIF_NOTIFY_RESUME); + tracehook_notify_resume(regs); + } } -- cgit v1.2.3